<template>
  <el-container class="home-container">
    <!-- 头部区 -->

    <el-header>
      <div>
        <img src="../assets/1.jpg" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>

    <!-- 页面主体区 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside width="isCollapse ? '64px' : 200px">
        <!-- 点击伸缩 -->
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!--侧边栏菜单区域 -->
        <el-menu
          background-color="#292a3a"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/'+subItem.path "
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/'+subItem.path )"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-3702mima',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollapse:false,
      // 被激活的链接地址
      activePath :'',

    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menulist = res.data;
      console.log(res);
    },
    // 点击按钮，切换菜单，隐藏/显示
    toggleCollapse(){
      this.isCollapse =!this.isCollapse
    },
    //保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }
  }
};
</script>
<style lang="less" scoped>
.home-container {
  height: 700px;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 10px;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 20px;
    }
  }
}
img {
  width: 60px;
  height: 60px;
}
.el-aside {
  background-color: #292a3a;
  .el-menu{
    border-right:none ;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color:#4a5064 ;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align:center ;
  letter-spacing:0.2em ;
  cursor: pointer;
}
</style>